Why we apply only reduced voltage to the alternator while
conducting slip test ? also the current increases to a
larger value with reduced voltage itself Why ?
Answer / sarbajeet jena
Since the excitation emf is zero, heavy currents would be drawn by the armature if connected to the rated voltage supply. Also, if the voltage is large, the reluctancetorque due to saliency may bring the rotor in synchronism with the rotating flux (ie.the synchronous machine will run as a reluctance motor)
Is This Answer Correct ? | 6 Yes | 2 No |
Differentiate between induced emf and self inductance?
Hello friends., my question is related to testing of current transformer... A Ct having knee point voltage of 750 volts., and I have two step up transformer's of rating 230 v to 440 volts., can I obtain the value of 750 volts by using the two transformer's.... If yes then how could I connect the transformer's to obtain knee point voltage?? thank you in advance
What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?
20 Answers Jindal, Pharma, TAAT, TATA,
What is maximum demand?How can we caluclate it?
What is the effect on Power factor and capacitor when your company load is more than 70 % of welding transformer
explain in detail HV & LV bushing connection in power transformer (110 / 11 kv 16 MVA)
6 Answers TNEB Tamil Nadu Electricity Board, wbsedcl,
can i able to get bhel previous exam question paper?
Any formula to calculate neutral current in 3 phase 4 wire system
what is differnce between grounding and earthing or both are same?
what are the methods of speed control of dc motor???
what is vfd?
when turbine trips generator will becomes induction motor or synchronous motor?